IF EXISTS (SELECT *
           FROM INFORMATION_SCHEMA.ROUTINES
           WHERE ROUTINE_NAME='pSellStatistics'
           AND ROUTINE_SCHEMA='dbo'
           AND ROUTINE_TYPE='PROCEDURE'
          )
          DROP PROCEDURE dbo.pSellStatistics
GO

CREATE PROC dbo.pSellStatistics
  @vdatFromDate     DATETIME = NULL,
  @vdatToDate		DATETIME = NULL,
  @intProductTypeId	INT = NULL,
  @intProducerId	INT = NULL
AS
/*@@*_____________________________________________________________________

  

_____________________________________________________________________*@@*/

/*______________________ CONSTANT DECLARATIONS _________________________*/

  DECLARE
    @cstrThisProc              NVARCHAR(128),
    @cintErrGeneral            INT

  SET @cstrThisProc            = N'pSellStatistics'
  SET @cintErrGeneral          = 50000  -- General error. Used when an
                                        -- error has occurred and no other
                                        -- specific error condition is
                                        -- assigned.

/*______________________ VARIABLE DECLARATIONS _________________________*/

  DECLARE
    @intErrNo       INT,
    @strErrMsg      NVARCHAR(400),
    @intReturn      INT

/*_______________________________ INIT _________________________________*/

  -- Setting NOCOUNT ON prevents additional recordsets with the
  -- "number of records affected" from being returned, which is not
  -- handled the same by all providers, such as for OLEDB vs. ODBC.
  SET NOCOUNT ON

/*________________________ VALIDATE PARAMETERS _________________________*/


/*_______________________________ MAIN _________________________________*/

	SELECT
		Product.Id,
		Product.[Name],
		RemainAmount = Product.[Amount],
		Amount = SUM(BillDetail.Amount),
		TotalSalePrice = SUM(BillDetail.TotalSalePrice),
		TotalInput = SUM(BillDetail.TotalInputPrice),
		TotalBenefit = SUM(BillDetail.TotalSalePrice - BillDetail.TotalInputPrice),
		TotalDiscount = SUM(BillDetail.TotalProductPrice - BillDetail.TotalSalePrice),
		RowNumber = ROW_NUMBER() OVER(ORDER BY Product.[Name])
	FROM Product
	
	INNER JOIN vBillDetail BillDetail
		ON Product.Id = BillDetail.ProductId
		
	INNER JOIN Bill
		ON BillDetail.BillId = Bill.Id
	
	WHERE Product.IsDeleted = 0
		AND Bill.IsPrinted = 1
		AND ((@vdatFromDate IS NULL) OR (DATEDIFF(DAY, @vdatFromDate, Bill.SaleTime) >= 0))
		AND ((@vdatToDate IS NULL) OR (DATEDIFF(DAY, Bill.SaleTime, @vdatToDate) >= 0))
		AND ((@intProductTypeId IS NULL) OR (Product.ProductTypeId = @intProductTypeId))
		AND ((@intProducerId IS NULL) OR (Product.ProducerId = @intProducerId))
	
	GROUP BY Product.Id,
		Product.[Name],
		Product.[Amount]

	ORDER BY Product.[Name]
	
  -- Return value 0 indicates success
  SET @intReturn = 0

lblExit:

  RETURN @intReturn

/*___________________________ ERROR HANDLER ____________________________*/
lblError:
  -- An error has occurred.  On entering this section @intErrNo should
  -- already hold the error number

  -- By default, if there are any open transactions then roll them back
  IF (@@TRANCOUNT > 0) BEGIN
    ROLLBACK TRAN

  END

  -- If return value has not been explicitly set, then use the error
  -- number as return value to signify failure
  IF ((@intReturn IS NULL) OR (@intReturn = 0)) BEGIN
    SET @intReturn = @intErrNo

  END

 GOTO lblExit


